Question

Statistics students in Oxnard College sampled 9 textbooks in the Condor bookstore and recorded the number of pages in each textbook and its cost. The bivariate data are shown below: Sno Number of Pages (2) Cost(y) 399 50.89 316 40.76 120.89 899 695 95.45 369 62.59 778 99.58 71.24 584 673 92.03 118.87 917 A student calculates a linear model ya 3 + (Please show your answers to two decimal places) Use the model to estimate the cost when number of pages is 953. Cost = $ (Please show your answer to 2

Answer 1

To predict the cost of textbooks with a given number of pages using a linear model and generate a regression line.

Step-by-step explanation:

To predict the cost of a textbook with 400 pages using the linear model ya 3 +, you need to substitute the number of pages (x) into the equation and solve for y:

Cost = a + bx

Given that a = 3 and b is not provided, we cannot make an accurate prediction without the value of b.

To predict the cost of a textbook with 600 pages, you would substitute x = 600 into the equation and solve for y:

Cost = 3 + b(600)

Again, without the value of b, we cannot calculate the prediction.

Lastly, to obtain the regression line, you would need to plot the data points (number of pages vs. cost) on a graphing calculator or computer and use the regression feature to generate the line of best fit that represents the relationship between the two variables.